2775248581 has 8 divisors (see below), whose sum is σ = 3172738880. Its totient is φ = 2378014848.

The previous prime is 2775248579. The next prime is 2775248629. The reversal of 2775248581 is 1858425772.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2775248581 - 2¹ = 2775248579 is a prime.

It is a super-2 number, since 2×2775248581² = 15404009372685027122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2775248501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40371 + ... + 84736.

It is an arithmetic number, because the mean of its divisors is an integer number (396592360).

Almost surely, 2^2775248581 is an apocalyptic number.

It is an amenable number.

2775248581 is a deficient number, since it is larger than the sum of its proper divisors (397490299).

2775248581 is a wasteful number, since it uses less digits than its factorization.

2775248581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128283.

The product of its digits is 1254400, while the sum is 49.

The square root of 2775248581 is about 52680.6281378649. The cubic root of 2775248581 is about 1405.2943378476.

The spelling of 2775248581 in words is "two billion, seven hundred seventy-five million, two hundred forty-eight thousand, five hundred eighty-one".